The manual gives an overview of the UK system of government, including how the Executive - the government and the Civil Service - relates to Her Majesty the Queen, devolved administrations and international institutions such as the European Union (EU).

It reflects the importance of Parliament and Cabinet government, and the democratic nature of the UK’s constitutional arrangements.

The manual is primarily intended to provide a guide for members of Cabinet, other ministers and civil servants in the carrying out of government business, but will also serve to bring greater transparency about the mechanisms of government, informing the public whom the government serves.